0.027+9.9×0.027 怎样简算.
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0.027+9.9×0.027 怎样简算.
0.027+9.9×0.027 怎样简算.
0.027+9.9×0.027 怎样简算.
0.027+9.9×0.027
=0.027×(1++9.9)
=0.027×(10+0.9)
=0.027×10+0.027×0.9
=0.27+0.0243
=0.2943
0.027+9.9×0.027
=0.027+(10-0.1)×0.027
=0.27+0.027+0.0027
=0.2997
只可以简单一点,至少我觉得是这样
0.027+10×0.027-0.0027
=0.027+0.27+0.0027
=0.2997